package cn.edu.tsinghua.dao.impl;



import cn.edu.tsinghua.dao.impl.BaseHibernateDAO;
import cn.edu.tsinghua.vo.Componenttype;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;

/**
 * A data access object (DAO) providing persistence and search support for
 * Componenttype entities. Transaction control of the save(), update() and
 * delete() operations can directly support Spring container-managed
 * transactions or they can be augmented to handle user-managed Spring
 * transactions. Each of these methods provides additional information for how
 * to configure it for the desired type of transaction control.
 * 
 * @see cn.edu.tsinghua.dao.Componenttype
 * @author MyEclipse Persistence Tools
 */

public class ComponenttypeDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(ComponenttypeDAO.class);
	// property constants
	public static final String TYPE_NAME = "typeName";
	public static final String TYPE_COUNT = "typeCount";

	public void save(Componenttype transientInstance) {
		log.debug("saving Componenttype instance");
		try {
			Transaction tx=getSession().beginTransaction(); 
			getSession().save(transientInstance);
			tx.commit();
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Componenttype persistentInstance) {
		log.debug("deleting Componenttype instance");
		try {
			Transaction tx=getSession().beginTransaction(); 
			getSession().delete(persistentInstance);
			tx.commit();
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Componenttype findById(java.lang.String id) {
		log.debug("getting Componenttype instance with id: " + id);
		try {
			Componenttype instance = (Componenttype) getSession().get(
					"cn.edu.tsinghua.dao.Componenttype", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Componenttype instance) {
		log.debug("finding Componenttype instance by example");
		try {
			List results = getSession().createCriteria(
					"cn.edu.tsinghua.dao.Componenttype").add(
					Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Componenttype instance with property: "
				+ propertyName + ", value: " + value);
		try {
			String queryString = "from Componenttype as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByTypeName(Object typeName) {
		return findByProperty(TYPE_NAME, typeName);
	}

	public List findByTypeCount(Object typeCount) {
		return findByProperty(TYPE_COUNT, typeCount);
	}

	public List findAll() {
		log.debug("finding all Componenttype instances");
		try {
			String queryString = "from Componenttype";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Componenttype merge(Componenttype detachedInstance) {
		log.debug("merging Componenttype instance");
		try {
			Componenttype result = (Componenttype) getSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Componenttype instance) {
		log.debug("attaching dirty Componenttype instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Componenttype instance) {
		log.debug("attaching clean Componenttype instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}